Mathematical Problems in Engineering

Research Article

A Node Selection Paradigm for Crowdsourcing Service Based on Region Feature in Crowd Sensing

Table 1

Normalization method.
Region FeatureNormalization Method
Location information ()For every region in area , match with . If is contained in , set as 1. Otherwise, set as 0.
Timeliness ()Find the smallest in area , which is denoted as . Set as 1, and compare the value of with the values of all the regions in area . Let denote the resulting ratio.
Liveliness ()Find the largest in area , which is denoted as . Set as 1, and compare the value of to the values of all the regions in area . Let denote the resulting ratio.
Wi-Fi coverage information ()Find the largest in area , which is denoted as . Set as 1, and compare the value of with the values of all the regions in area . Let denote the resulting ratio.